Focus Stories

Every month we will focus on a specific theme, featuring a selection of articles which have previously been published in Hydro International magazine. By including a mix of older and more recent articles, we will present a complete recap of the subject. Furthermore, we will be bringing you a bi-weekly round-up of ‘Focus Stories’ related to the theme through our newsletter (sign up here). The theme for April 2016 is Shallow Water.

An important area of work in hydrography is shallow water. This month, Hydro International collected papers focussing on shallow-water surveying. Interesting is that this field of work has multiple ways to collect the data: traditionally using a vessel but also techniques like Lidar, satellite bathymetry or hovercrafts (and smaller) are used.

Very Shallow-water Bathymetry

Very Shallow-water Bathymetry

The River Murray Operations Unit (RMOU) of the South Australian Water Corporation surveys very shallow waters, a type of surveying that has its own specific problems overcome by no...

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Riverbed Surveying

Riverbed Surveying

In order to meet the requirements of the European Water Framework Directive (EU-WFD), authorities face the problem of performing area-wide surveys of all kinds of inland waters rep...

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Shallow Water Current Measurements

Shallow Water Current Measurements

Since the management of coastal areas came to the attention of marine science, much effort has been expended in applying originally ‘blue water’ measurement technologie...

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Subsea Cable Route Surveying

Subsea Cable Route Surveying

Almost all (99%) international data is transmitted by around 265 subsea cable systems connecting the world. The total length of subsea cables exceeds 1.6 million kilometres, and th...

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Stop Using DGPS!

Stop Using DGPS!

High-resolution multi-beam echo sounder (MBES) surveys should not be conducted where the uncertainty of the horizontal positioning system is larger than the nadir footprint of the...

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A Flooded Landscape Revealed

A Flooded Landscape Revealed

During the last week of a hydrographic survey of Lough Derg, Ireland’s third largest lake, the remnants of a preserved flooded landscape were unveiled beneath the surface wit...

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